Saudi Arabia intends to build a horizontal skyscraper Mirror Line that will be 170 km long.

The ambitious project will be part of the desert city of Neom, whose size will be comparable to that of Massachusetts. Crown Prince Mohammed bin Salman believes that the new city will be as iconic a project as the Egyptian pyramids.

The skyscraper will be called Mirror Line. It will consist of two parts with a height of 488 m. For comparison, the height of the Empire State Building is 381 m. The Mirror Line will be in the top 15 tallest buildings in the world and take 13th place if nothing taller is built by then. And there is time. The Mirror Line is expected to take 50 years to build, although Prince wants the project completed by 2030.

The two parts of the skyscraper will run through the desert, coast and mountains parallel to each other. Architects will take the curvature of the Earth into account when designing the building. Mirror Line will have a separate underground high-speed train line, a stadium at a height of 304 m and a pier for ships.

Experts in environmental planning do not approve of the Crown Prince’s idea. Experts believe the Mirror Line’s length and mirrored glazing could affect the migration of animals and migratory birds.

The futuristic buildings feature a silver shine and an intricate inside, with stairwells and greenery and homes to create a linear community.

The trillions-of-dollars project is expected to house five million people after its completion and a high-speed train will run underneath the buildings, according to the Wall Street Journal. It will also feature a marina for boats underneath the arch of the buildings.

The community of millions will also be fed through vertical farming that will be integrated into the walls of the shiny buildings and residents will reportedly pay a subscription for three meals a day.

Desert living won’t just be hot, sticky, and sandy, but the Mirror Line will also feature a sports stadium that is set to be 1,000 feet above the ground.